What is a stand-up bag? A stand-up pouch is a flexible pouch with a horizontal support structure at the bottom, which can stand without any support and whether it is open or not. The English name of the stand-up bag originated from the French company Thimonier. In 1963, Mr. M. Louis Doyen, the president of the French company Thimonier, successfully applied for the Doypack stand-up bag. Since then, the doypack has become the official name application of the stand-up bag. to date. Widely recognized in the US market in the 1990s, and then popularized around the world.